I mean, I was laughing, don't get me wrong. But having had my back betray me like that, I think Okusan is very pitiable. Everyone is so busy being embarrassed, nobody helped her straighten out!
Being in your thirties can be a rude reminder that, no, you're not a teenager anymore. During your twenties, you can forget that with no ill effects. After you hit thirty, though - watch out!